Issue
EPL
Volume 85, Number 5, March 2009
Article Number 50007
Number of page(s) 5
Section General
DOI http://dx.doi.org/10.1209/0295-5075/85/50007
Published online 20 March 2009
EPL, 85 (2009) 50007
DOI: 10.1209/0295-5075/85/50007

Cavity grid for scalable quantum computation with superconducting circuits

F. Helmer1, M. Mariantoni2, 3, A. G. Fowler4, J. von Delft1, E. Solano1, 5 and F. Marquardt1

1   Department of Physics, CeNS, and ASC, Ludwig-Maximilians-Universität - Theresienstrasse 37, 80333 Munich, Germany, EU
2   Walther-Meißner-Institut, Bayer. Akademie der Wissenschaften - Walther-Meißner-Str. 8, 85748 Garching, Germany, EU
3   Department of Physics, Technische Universität München - James-Franck-Str., 85748 Garching, Germany, EU
4   Institute for Quantum Computing, University of Waterloo - Waterloo, ON, Canada
5   Departamento de Química Física, Universidad del País Vasco - Euskal Herriko Unibertsitatea - 48080 Bilbao, Spain, EU

Florian.Marquardt@physik.lmu.de

received 4 December 2008; accepted in final form 16 February 2009; published March 2009
published online 20 March 2009

Abstract
We propose an architecture for quantum computing based on superconducting circuits, where on-chip planar microwave resonators are arranged in a two-dimensional grid with a qubit at each intersection. This allows any two qubits on the grid to be coupled at a swapping overhead independent of their distance. We demonstrate that this approach encompasses the fundamental elements of a scalable fault-tolerant quantum-computing architecture.

PACS
03.67.Lx - Quantum computation architectures and implementations.
42.50.Pq - Cavity quantum electrodynamics; micromasers.
85.25.-j - Superconducting devices.

© EPLA 2009